Water-tube boiler.



(No Model.)

WMU

l` [in l Ilm Hui" Patented Aug. 2l, |900. W. L. JANCEY.

WATER TUBE BOILER.

(Application -led Apr. 18, 1900.)

2 Sheets-Sheet iiCk/l /7 d 'MIMI v WUCJM o?" o-Lrruo., wAsmNGToN u c No.656,|93. Patented Aug. 2|, |900. W. L. JANCEY.

l WATER TUBE BOILEB.

(Application led Apr. 18, 1900.)

2 Sheets-Sheet 2,

No Model.)l

mwllw UNT-TED STATES PATENT OFFICE.

WILLIAM L. JANcEY, on onIoAeoQiLLINoIs, ASSIGNOR To BUGBEE a LAYoooK, orSAME PLACE.

WATER-TUBE BOILEa.

SPECIFICATION forming part of Letters Patent No. 656,198, dated August21,1900.

Application filed April 18, 1900.` Serial No. 13,368. (No model.)

To LZZ whom t may concer-rz,.-

Be it known that I, W'ILLIAM L. JANCEY, a citizen of the United States,and a resident of Chicago, county of Cook, and State of Illinois, haveinvented certain new and useful Improvements in Water-Tube Boilers andFurnaces Therefor, of whichV the following is a specification and whichare illustrated in the accompanying drawings, forming a part thereof. i

The invention as illustrated is applied more particularly to marineboilers, but is applicable to boilers adapted for service in anysituation.

The objects of the invention are to increase the efficiency ofsteam-boilers of this type and to render them compact and simple ofconstruction.

The invention consists in the construction hereinafter fully described,and illustrated in the accompanying drawings, in which- Figure 1 is acentral vertical longitudinal section of the water-tube boiler and vitsfurnace; and Fig. 2 is a plan section on the line 2 2 of Fig. 1, some ofthe parts being broken away.

I have shown in the drawings a furnacesetting, the iloor of the furnacebeing shown at 10, its front at 11, its grateat 12, the lining of itsre-boX at 13, its fire-door at 14, its ashpit at 15, its ash-pit door at16, and its smokestack at 17. The walls of the furnace are shown asconsisting of sheet metal lined with asbestos.

At 18 there is shown a vertical water-drum, forming a part of thesteam-boiler and being inclosed within the walls ofthe furnace and atthe rear of its chamber, this drum preferably extending from thefurnace-floor to or through its top. A plurality of U-shaped water-tubes19 have their ends set through the wall of the drum 18 in verticalplane, the tubes bowing forwardly into the combustioncliamber of thefurnace, some of them eX- tending to the front plate of the latter.These tubes may be as numerous as desired. As shown, they are arrangedin nine sets of four tubes each. The lower arm of each U -shaped tubeinclines upwardly from the druln, and y the upper arm of each may besubstantially horizontal, as shown.

A deflectingplate 20, composed of sheet metal having an under lining ofasbestos, projects forwardly from the back of the combustion-chamber andis supported by the topmost of the lower arms of the water-tubes, spacebeing left between the forward end of this plate and the front plate ofthe furnace for the passage of the products of combustion, and the lineof draft being thereby caused to follow substantially the direction ofthe watertubes throughout their entire length, as indicated by thearrows.

The upper end of the drum 18 forms the steam-dome, and a steam-pipe 21leads therefrom. A pipe 22 is shown asV entering the lower end of thedrum and will serve for the purposes of water-feed or sediment blow-off.

In order to secure the most efficient service, the water-line ismaintained substantially at the level of t-he line 2 2 in Fig. 1, andthe upward inclination of the lower portion of the water-tubes insures arapid circulation. The steam generated within these tubes mechanicallycarries up with it a considerable quantity of water, and the generationof steam is the most active in the upper portions of the tubes.

The marked advantage in this boiler over those of the same class incommon use arises from the vertical position of the drum 18, whereby afree and uninterrupted circulation of water therein is secured. Thereturn of the tubes to the drum being above the waterline, such of thecontents thereof as are dis` charged in liquid form falls from themouths of the tubes. The Water-supply to that portion of the tubes towhich the heat is first applied is direct and the retardation ofcireulation by friction due to the necessity of conveying the waterthrough down pipes is 'entirely avoided.

The 'discharge of the intel-mingled steam and water from the upper endof the tubes being above the water-line, the tendency to foaming isgreatly lessened. The vertical arrangement of the drum serves a furtheruseful purpose in providing for the easy precipitation of sediment, andthe lower end of the drum being below the fire-box there is no agitationof the sediment after its precipitation. vThe boiler is peculiarly welladapted for marine service, for the reason that its center of gravity isVery low.

It will be understood that Ido not limit IOO dicrent elevations, thelower arm of each tube being inclined upwardly from its end, and theupper arm thereof being substantially horizontal; and a deflecting-plateeX- tending from the drum between the two arms of the several tubes,whereby the line of draft is caused to substantially follow the line ofthe tubes.

WILLIAM L. J ANCEY.

Witn esses:

PAUL CARPENTER, LoUIs K. GILLsoN.

